Tag Archives: #inkfasttest

Strong Enough for a Man; pH Balanced for a Fountain Pen?

One of the many great aspects of marrying a scientist is the gadgetry. Intrigued by my ink-fast tests  with UV light, Dawn decided to get a professional pH meter to test our ink for corrosiveness. If you remember basic chemistry from high school…which I barely do…you will remember that we have acid on one side of a scale and base/alkali on the other. The scale ranges from 0 to 14. 7 is neutral like distilled water. The further you move away from 7 in either direction is more corrosive. The 0 side is acid and the 14 side is base/alkali.

You would think that all inks are hovering around a 7 to be safe in your pen and on paper. We certainly did.

Holy cats! We were wrong.

First you saw these Pelikan Edelstein inks in our UV ink fast test. Now we’re going back and checking their pH balance!

For years I told people…as I was told by many pen collectors and dealers before me…that you can always trust simple blue and black inks from the major pen manufacturers. However, just our initial testing indicates that might not be the best advice any longer.

Before I go on, let me preface the following by saying that we are not chemists. We feel confident in our results from our testing. However, we do not know the chemistry of the ink interacting with ink sacs, celluloid, gaskets, seals and other assemblies inside your pens. Our pH testing is simply raw data we gather from bottles of ink we have collected. Yet, it might help shed some light if you are experiencing trouble with certain inks interacting poorly with your vintage or modern pens over time.

Having recently written about Pelikan Edelstein inks in an ink-fast test, I thought I would revisit these inks for our pH testing. For those keeping score at home our meter and inks were tested and calibrated at 24ºC.

Pelikan Edelstein Amethyst               5.6
Pelikan Edelstein Aquamarine          3.3
Pelikan Edelstein Aventurine             6.4
Pelikan Edelstein Garnet                   6.5
Pelikan Edelstein Jade                       5.3
Pelikan Edelstein Olivine                    6.0
Pelikan Edelstein Ruby                       7.9
Pelikan Edelstein Sapphire                 3.7
Pelikan Edelstein Smokey Quartz       6.5
Pelikan Edelstein Tanzanite                7.3
Pelikan Edelstein Topaz                      6.4
Pelikan Old Version Violet                   2.7
Pelikan Modern Violet                         3.4
Pelikan Brilliant Red                           6.9

Again, I’m not a chemist, and I have not studied how these inks interact chemically with ink sacs and other pen parts.

That said, what really strikes me as fascinating is that the “traditionally safe” blues such as Sapphire and Aquamarine are really acidic. I love Edelstein Sapphire and use it more than any of these other colors, and I would never have guessed it was as acidic at it is.

Also fascinating, I’ve been told for years never to put red ink in an ink sac, but Garnet, Ruby and Brilliant Red are among the closest inks to test near pH neutral.

Again, the chemicals in the ink might interact differently with the chemical compositions of our pens, but we find this to be a really fun look into our favorite inks. Many more UV and pH tests to come!

Pelikan Edelstein Inks Go Under the Sun

I feel that the harsh news must be tempered.

I LOVE Pelikan pens. It is my favorite modern pen brand. I LOVE Pelikan’s Edelstein inks. They are so vibrant and beautiful. I had extremely high hopes for testing them and having far better results than standard Pelikan inks. (I wrote a travel journal at 17 when visiting Germany and bought my first bottle of Pelikan Konigsblau Tinte—King’s Blue Ink, or Royal Blue by regular English naming conventions. I can barely read it, the ink is so faded after nearly 30 years.)

Look how vibrant and beautiful Pelikan Edelstein inks look when fresh on the page. Do you see what happens to them after 3 months in direct sunlight?

As fate would have it, I bought out an ink collection this past winter. There were more than 270 bottles of ink. Among the bottles were 12 different colors of Edelstein ink and 3 bottles of standard Pelikan inks, which I had not previously tested. Also included in this test are two non-Pelikan related inks.

Assisting me in this endeavor was my ever-more talented fiancé Dawn. You can immediately tell which test sheet is her’s by it being so much easier to see and read.

Pelikan inks were first started by German chemist Carl Hornemann in 1838, making Pelikan one of the oldest and most successful continuously operating ink companies in history. Yet, the company wasn’t really known as Pelikan until chemist Günther Wagner took over the company in 1871 and started using the Pelikan logo. The gemstone-inspired Edelstein inks were first launched with great success in 2011.

Our ink-fast test methodology remains simple. Put one sample in a sunny window for three months and one sample in a dark, cool place and check out the differences.

WOW!

Pelikan regular inks fare badly in three months of UV light. However, No. 5 Aonibi does very well.

None of the Pelikan inks withstood 3 months of UV light from the sun very well at all.  The beautiful Amethyst turned from purple to a faded brown. Blue-grey Tanzanite also turned colors to a faded brownish. My favorite Sapphire almost completely disappeared. So did Jade, Ruby and Topaz. When applied very thickly, Aquamarine, Olivine, Mandarin and Adventurine kinda held out. Only Garnet seemed to survive mostly intact.

Moving on to the standard Pelikan inks, Brilliant Red almost disappeared completely, turning a very faded yellow. Violet and Brilliant Green also lost about 70% to 80% of their color and visibility.

Our two non-Pelikan contestants were No. 5 Aonibi, which is a lovely blue-black when fresh and Organic Studio “N,” which is a stunningly beautiful sheening blue. Although I’ve never heard of No. 5 Aonibi, it held its own quite well in this test. Of the 17 inks sampled, it won the contest of looking the most like it did when it was first put to paper.

Organic Studio “N” could easily win the contest to be my new favorite blue ink, but it inexplicably turned black in the sun. That is way better than fading to near invisibility, but I really wish it held its true color when fresh on paper.

Bic Cristal Inks Get Testing

We tested these 8 Bic Cristal pens to see how ballpoint ink holds up to 6 months of sunlight. Blue, Pink, Green, Black, Grass-Stain Green, Purple, Turquoise and Red.

During my last visit with Ink-Fast Donn at the D.C. Pen Show in 2019, he said he was starting to test ballpoint inks to see how well they hold up to UV light.

Last summer, I discovered a collection of the famous and commonly used Bic Cristal ballpoints in my fencing gear. I taught a wonderful group of teens and tweens advanced competition maneuvers and strategy, and to help them remember their lessons and opponents, I insisted they keep “Diaries of Doom” and “Tomes of Terror.” To help personalize it more, I handed out colorful notebooks and pens.

Armed with 8 colors (blue, pink, green, grass-stain green, black, turquoise, purple and red), I created a sample on Rhodia paper and taped it to a sunny window of my home at the end of August. I took it down at the end of February and was surprised by the results.

This photo doesn’t really do full justice to the sample set and proof set. The blue doesn’t look as blue as it does in real life.

Surprise #1 to me was that the black ink faded. With fountain pen inks, you can generally count on black to be the most stable and fade-proof. While it didn’t fade away entirely, it had issues.

Side by side comparisons showcase the effect of 6 months of sunlight on Bic Cristal inks.

Surprise #2: Blue! Blue fountain pen inks fade something fierce under the withering sun. Bic Cristal blue got stronger! It lost some of its blueness and turned blacker, but it held on defiantly under the sun’s gaze.

Surprise #3: Grass-Stain Green didn’t fade as much as I thought it would. It faded a little.

Red and purple faded the most. Green, turquoise and pink faded a little, but survived okay.

Reflecting on this experiment, for some reason, I always assumed oil-based ballpoint inks would be far more permanent than water-based fountain pen inks. Yet, their chemical compositions all have their frailties. Some ballpoint colors react differently than fountain pen inks, but that shouldn’t surprise me as much as it did.